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#!/bin/bash |
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# |
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# Snippets from http://landley.net/notes.html |
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# |
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# Usage: |
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# test/toysh.sh |
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|
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#### @Q |
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# http://landley.net/notes.html#24-06-2020 |
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|
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# Fix these |
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case $SH in (dash|mksh|zsh) exit ;; esac |
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|
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xx() { echo "${*@Q}";}; xx a b c d |
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xx() { echo "${@@Q}";}; xx a b c d |
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## STDOUT: |
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'a' 'b' 'c' 'd' |
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'a' 'b' 'c' 'd' |
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## END |
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## OK osh STDOUT: |
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a b c d |
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a b c d |
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## END |
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## N-I dash/mksh/zsh stdout-json: "" |
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|
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#### extglob 1 - OSH only supports extglob for fnmatch()? |
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rm * # setup |
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# http://landley.net/notes.html#12-06-2020 |
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shopt -s extglob |
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|
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touch abc\)d |
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echo ab+(c?d) |
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|
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IFS=c ABC="c?d" |
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echo ab+($ABC) |
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|
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ABC='*' |
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echo $ABC |
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|
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## STDOUT: |
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abc)d |
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ab+( ?d) |
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abc)d _tmp |
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## END |
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## OK mksh STDOUT: |
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abc)d |
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ab+( ?d) |
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_tmp abc)d |
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## END |
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|
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#### extglob 2 |
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# http://landley.net/notes.html#17-05-2020 |
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|
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shopt -s extglob # required for bash, not osh |
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IFS=x; ABC=cxd; for i in +($ABC); do echo =$i=; done |
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|
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## STDOUT: |
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=+(c= |
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=d)= |
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## END |
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|
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#### char class / extglob |
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# http://landley.net/notes.html#14-05-2020 |
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shopt -s extglob |
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|
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rm * |
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|
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touch l; echo [hello"]" |
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|
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touch b |
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echo [$(echo abc)] |
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|
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touch + |
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echo [+()] |
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echo [+(]) |
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## STDOUT: |
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[hello] |
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b |
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+ |
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[+(]) |
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## END |
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## BUG mksh STDOUT: |
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[hello] |
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b |
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[+()] |
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[+(]) |
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## END |
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|
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#### patsub of $* - http://landley.net/notes.html#23-04-2020 |
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chicken() { echo ${*/b c/ghi}; }; chicken a b c d |
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## STDOUT: |
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a b c d |
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## END |
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## BUG mksh stdout-json: "" |
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## BUG mksh status: 1 |
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|
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|
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#### Brace Expansion (known difference) |
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# http://landley.net/notes.html#04-01-2020 |
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|
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HOME=/home/foo |
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|
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echo {~,~root}/pwd |
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echo \{~,~root}/pwd |
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echo ""{~,~root}/pwd |
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|
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## STDOUT: |
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~/pwd ~root/pwd |
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{~,~root}/pwd |
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~/pwd ~root/pwd |
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## END |
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## OK bash STDOUT: |
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/home/foo/pwd /root/pwd |
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{~,~root}/pwd |
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~/pwd ~root/pwd |
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## END |
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|
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#### {abc}<<< - http://landley.net/notes-2019.html#09-12-2019 |
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{ echo; } {abc}<<< walrus |
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cat <&$abc |
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## STDOUT: |
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|
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walrus |
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## END |
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## N-I mksh stdout-json: "" |
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## N-I mksh status: 1 |
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|
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#### slice of @ and @ - http://landley.net/notes.html#23-04-2020 |
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IFS=x; X=x; eval abc=a${X}b |
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|
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chicken() { for i in "${@:3:5}"; do echo =$i=; done; } ; chicken ab cd ef gh ij kl mn op qr |
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|
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chicken() { for i in "${*:3:5}"; do echo =$i=; done; } ; chicken ab cd ef gh ij kl mn op qr |
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|
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## STDOUT: |
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=ef= |
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=gh= |
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=ij= |
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=kl= |
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=mn= |
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=ef gh ij kl mn= |
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## END |
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## N-I mksh stdout-json: "" |
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## N-I mksh status: 1 |
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